How popular is Rainault?

Rainault is an uncommonly occurring given name for men. Rainault is also an unusual last name for both adults and children. (2000 U.S. CENSUS)

Which version is better?

Popular related forms of Rainault (OUTSIDE TOP 2000) rated in the Top 2000 are Reginald(#821 FROM CURRENT RECORDS) and Rene(#881). Adoption of these relations of Rainault was well-received among parents 56 years ago (USAGE OF 0.2%) and is now much less, with versions like Rene becoming less fashionable. (2016 U.S. SSA RECORDS)